Zip is a free .NET Zip File library which works with C# or other languages that use the CLR.

http://www.organicbit.com/zip/

Al Williams wrote an excellent article on using the Info-Zip DLLs to manipulate Zip files. There are lots of commercial libraries that let you access Zip files, but your choices in free software are few and far between. So if you need a free solution, Al’s article is a must-read. Many thanks to Al for getting this back on line after Visual Developer’s web site disappeared.

http://www.al-williams.com/new/zip.htm

Fed up with limited compression performance of Stacker, PKZIP, UC2, ZOO, ARJ and LHA? CRUSH will usually give 5%-50% improved compression over any other DOS compression tool, and yet allows the user to continue using the archiver already in use. CRUSH is fast and the ideal choice for users keen to save disk space. I can’t help but note that the last update of CRUSH was in 1995!

http://ourworld.compuserve.com/homepages/pocketware/crush.htm

An article by Giovanni Motta and friends that appears in the Encyclopedia of Computer Science. Packs a lot of information into a short 8 or so pages.

Reader sreenu says: excellent article.

http://www.cs.brandeis.edu/~gim/Papers/EncyCsPaper.pdf

Part of a Master’s Thesis on voice compression, in Italian.

http://www.cs.brandeis.edu/~gim/Papers/Cefriel.pdf

A Zip compatible library with a very impressive set of claims. Works with dozens of programming languages, offers full support for PKZip archives from 1.10 on, and more. Free evaluation version available.

Reader Carl P. says This is a must have tool.

http://www.lindersoftware.com/lspzip.htm

CiteSeer tracks references between academic papers, and has links to online versions of a great many papers. The compression links at the top level look like they are a bit sloppy, but there are subcategories for Audio, Text, and Video, which look as though they may be better.

http://citeseer.nj.nec.com/Compression/

Another archiver that supports the zip format? Yep, that’s what it is.Of course, BraZip does support TAR, RAR, GZ, LHA, and a host of other formats. Cruise around the web site a bit and you’ll find the same information in Portuguese.

http://www.soluszip.com.br/ingles/ingles.htm

A GPL product, with the following description from the site:

mpeg2dec is an mpeg-1 and mpeg-2 video decoder. It is purposely kept simple : it does not include features like reading files from a DVD, output picture scaling, audio decoding, synchronisation, etc… The main purpose of mpeg2dec is to have a simple test bed for libmpeg2. mpeg2dec also includes a demultiplexer for mpeg-1 and mpeg-2 program streams, and output routines for a variety of different interfaces.

http://libmpeg2.sourceforge.net/

A zip program that lets you unzip a whole batch of files all at once.

http://www.softuarium.com/multiziplicity.htm

S. Baum at Texas A&M keeps up a pretty good looking page of links to wavelet resources, categorized by type. Note that this page has apparently been zipped up to save space. The full content is inside the gz file.

http://www-ocean.tamu.edu/~baum/wavelets.html.gz

MainConcept makes a codec that encodes things in the Motion-JPEG format.

http://www.mainconcept.com/site/developer-products-6/motion-jpeg-sdk-4748/information-4809
.html

The Fastest JPEG engine available! Pegasus high speed JPEG engine offering the fastest JPEG compression and decompression available based on algorithmic optimization, assembly level enhancements, Pentium II and Pentium III optimization.

http://www.jpg.com/pictools_rapidvue.html

Not exactly a compression topic, but close enough to make the cut.

http://www.faqs.org/faqs/music/mp3/newsgroups-faq/

This program is currently capable of reading and extracting files made with LHA and other utilities that generate .lzh files, from -lh4- to -lh7-. The foundation of the algorithm for this program like ARJ is based on Haruhiko Okumura’s work on ar002, which was the foundation of LHA. Unlike Haruhiko’s work however, the dictionary size is dynamic and currently allows for dictionary sizes of up to 64KB. On larger files, compression of files is usually 0.5% to 5% tighter than PKzip, and work in progress will likely yield even better results. Files created with this utility natively create -lh7- signed archives, which on larger files results in slightly better compression than that of lha32 by Haruyasu Yoshizaki.

http://www.programfiles.com/index.asp?ID=6767

Yahoo links to UNIX archiving software sources.

http://dir.yahoo.com/Computers_and_Internet/Software/Operating_Systems/UNIX/Utilities/Arch
iving_and_Compression/

M. Purat, T. Liebchen, P. Noll: Lossless Transform Coding of Audio Signals. 102nd AES Convention, Munich, 1997. A PostScript file.

http://citeseer.nj.nec.com/323479.html

This page has links to online versions of Hirosuke Yamamoto’s papers on data compression. Papers here on block sorting, coding, and more. The papers are all published in English.

http://hirosuke.sr3.t.u-tokyo.ac.jp/files/DC.html

VoiceAge, of Montreal, announces the “Open G.729(A) Initiative,” which allows developers to freely use their G.729(A) codec object code for non-commercial purposes. This initiative provides you with an opportunity to work with the G.729(A) codec for free while developing products or applications. Take advantage of voice compression to prove that VoIP works efficiently and provides good voice quality.

Note: this site went all-Flash - which means you will have to navigate to the Open G.729 page manually.

http://www.voiceage.com/

Shannon’s entry in the Information Science Hall of Fame web page.

http://www.sis.pitt.edu/~mbsclass/hall_of_fame/shannon.htm

PKZIP integrated with Windows Explorer. Zip and Unzip through easy menu options.

http://www.pkware.com/products/pksuite.html#pkzipexp

by Vasudev Bhaskaran, Kluwer Academic Publishers, Boston Hardbound, ISBN 0-7923-9952-8, 472 pp., $97.50. This book describes the various standards in use today, including MPEG, JPEG, H.261, and so on.

Please use
the link on this page to purchase the book through Amazon.com. Your purchase will help support this web site.

http://www.amazon.com/exec/obidos/ASIN/0792399528/theinternetdatac

A paper by Howard and Vitter, available in both PDF and PS formats. The paper provides an analysis of the effect that models and various implementations of arithmetic coding have on compression.

http://www.cs.duke.edu/~jsv/Papers/catalog/node62.html

The Usenet newsgroup sci.fractals and the listserv forum frac-l are devoted to discussions on fractals. This FAQ (Frequently Asked Questions) is an electronic serial compiled from questions and answers contributed by many participants in those discussions. This FAQ also lists various archives of programs, images, and papers that can be accessed through the global computer networks (WWW/Internet/BITNET) by using email, anonymous ftp, gophers, and World Wide Web browsers. This FAQ is not intended as a general introduction to fractals, or a set of rigorous definitions, but rather a useful summary of ideas, sources, and references.

DCL user feedback: The links on that particular page are extremely outdated, as well as a lot of the information. It’s still useful, but there’s gotta be
a more up-to-date alternative

http://www.faqs.org/faqs/fractal-faq/

Many publications spanning a wide variety of image processing topics. Dr. Po has papers here on both wavelet and fractical compression, motion estimation, etc.

http://www.ee.cityu.edu.hk/~lmpo/publications/index.html

An article in the New York Times that gives a thumbnail description of Claude Shannon. You will need to register with the Times in order to read the article.

http://www.nytimes.com/2001/12/30/magazine/30SHAN.html

A draft proposal for delta encoding for text sent via HTTP.

http://www.ietf.org/internet-drafts/draft-mogul-http-delta-10.txt

A nice on-line paper that proposes to teach you a little something about wavelets.

http://www.wavelet.org/wavelet/tutorial/wavelet.htm

Pixelon shows what happens when technology gets mixed up with big bucks and shady characters. The Industry Standard ran a great story on it, but as they have gone belly up
this link may not work any more. So this CNet news article will have to do.

Reader Tim A. points out that they also claim that ‘No longer is it necessary to produce complex waveforms by summing sinusoidal signals at varying frequencies’, yet later call their process an ‘additive reconstruction process’. Sounds much like the same process to me, just with different starting waveforms..

http://news.cnet.com/news/0-1005-200-1865665.html

The Cabinet Software Development Kit provides developers with the components needed to utilize Microsoft’s cabinet file technology within other applications, or to build cabinet file management tools. Microsoft is committed to making cabinet files an open technology.
DCL User says: Easy implementation and works with memory mapped file too.

http://msdn.microsoft.com/library/en-us/dncabsdk/html/cabdl.asp